Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1521-1540 of 3826
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Labyrinth Weirs: Nappe Interference and Local Submergence
(American Society of Civil Engineers, 2012)The interaction of nappes from adjacent weir walls near an upstream apex can cause local submergence, which reduces labyrinth weir discharge efficiency. Local submergence effects can cause the head-discharge relationships ... -
Improved Surface Volume Estimates for Surface Irrigation Volume-Balance Calculations
(American Society of Civil Engineers, 2012)This article reviews procedures for estimating surface storage in surface irrigation volume balance calculations. Those procedures are based on the assumption of a power law relationship for flow depth as a function of ... -
Characterization of Pumps for Irrigation in Central California: Potential Energy Savings
(American Society of Civil Engineers, 2012)Many pumps are used for irrigation in central California, but a great number of them are operating inefficiently. In this paper, the information recovered from over 15,000 electric irrigation pump tests in central California ... -
Hydraulic and Statistical Analyses of Design Emission Uniformity of Trickle Irrigation Systems
(American Society of Civil Engineers, 2012)The important evaluation parameter in trickle irrigation is emission uniformity. There are two different methods to calculate emission uniformity; (1) field evaluation for the subunit and (2) using theoretical formulas to ... -
Effects of Hay Mulch on Soil Properties and Potato Tuber Yield under Irrigation and Nonirrigation in New Brunswick, Canada
(American Society of Civil Engineers, 2012)Organic mulching and irrigation are considered to be important soil conservation and agricultural practices. However, the effectiveness of these practices on soil properties and potato production in the relatively cool, ... -
Comparison of Multilevel Calibration and Volume Balance Method for Estimating Furrow Infiltration
(American Society of Civil Engineers, 2012)Furrow irrigation is one of the oldest methods of irrigation in which the soil surface is used to convey and infiltrate water. The most important problem in the path of improving furrow irrigation performance is the ... -
Errors in Infiltration Calculations in Volume-Balance Models
(American Society of Civil Engineers, 2012)Volume-balance models of surface irrigation calculate the infiltrated volume at a given time as a product of the stream length, upstream infiltration, and shape factors. The best-known expression of this type was derived ... -
Roughened Channels with Cross Beams Flow Features
(American Society of Civil Engineers, 2012)The implementation of roughened channels with cross beams (RCCB) in drainage systems reduces the negative effects of high kinetic energy on flood flows, such as the increased erosion of infrastructures or of the ground. ... -
Optimization Model for BMP Placement in a Reservoir Watershed
(American Society of Civil Engineers, 2012)The purpose of this study was to develop an optimization model for the optimal placement of structural best management practices (BMPs) at the watershed scale for a reservoir. In this research, the authors considered three ... -
Closure to “Generalized Analytical Solutions for Groundwater Head in Inclined Aquifers in the Presence of Subsurface Drains” by Sushil K. Singh
(American Society of Civil Engineers, 2012) -
Closure to “Simple Approximation of Well Function for Constant Drawdown Variable Discharge Artesian Wells” by Sushil K. Singh
(American Society of Civil Engineers, 2012) -
Evaporation Studies of Canopy-Covered On-Farm Reservoir
(American Society of Civil Engineers, 2012)The present study used fifteen existing evaporation models that use flux gradient, energy balance, and mass transfer approaches to estimate the rate of evaporation from a regular-sized open on-farm reservoir (OFR). Statistical ... -
Closure to “New Methods for Aquifer Parameters from Slug Test Data” by Sushil K. Singh
(American Society of Civil Engineers, 2012) -
Discussion of “Experimental Study on the Multisegment Regime of the Water Flow in Drip Emitters” by Wei Qingsong, Lu Gang, Wang Li, Zheng Jincan, Liu Jie, and Shi Yusheng
(American Society of Civil Engineers, 2012) -
Discussion of “Most Hydraulically Efficient Riprap-Lined Drainage Channels” by David C. Froehlich
(American Society of Civil Engineers, 2012) -
Performance Analysis and Calibration of a New Low-Cost Capacitance Soil Moisture Sensor
(American Society of Civil Engineers, 2012)Several newly developed sensors based on capacitance and frequency techniques have simplified real-time determination of soil water content ( -
Modified Hargreaves-Samani Equation for the Assessment of Reference Evapotranspiration in Alpine River Basins
(American Society of Civil Engineers, 2012)Deriving accurate estimates of reference evapotranspiration is required for water resource management, irrigation water requirement computations, and successful hydrological modeling. The Food and Agricultural Organization ... -
Design and Testing of a Flow Measurement System for an Urban Sewage Drain
(American Society of Civil Engineers, 2012)A flow-measuring system was developed to measure the flow rate of a river called Assi, a tributary to River Ganges in the city of Varanasi, India. The Assi River carries a huge quantity of sewage water, and thus serves as ... -
Estimating Daily Surface Soil Moisture Using a Daily Diagnostic Soil Moisture Equation
(American Society of Civil Engineers, 2012)One common problem is associated with water balance calculation methods for determining soil moisture for scheduling irrigation: errors in the estimated soil moisture are cumulative and frequent recalibrations are needed. ... -
Design and Validation of a Test Rig to Simulate High Rainfall Events for Infiltration Studies of Permeable Pavement Systems
(American Society of Civil Engineers, 2012)This paper presents the design and validation of a relatively cost-effective test rig to simulate high rainfall events; such a rig offers a great opportunity for conducting studies (e.g., high infiltration studies) that ...